circuitpython/ports/atmel-samd/boards/bdmicro_vina_d21/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME "BDMICRO VINA-D21"
#define MICROPY_HW_MCU_NAME "samd21g18"

#define SPI_FLASH_CS_PIN &pin_PA13
#define SPI_FLASH_MISO_PIN &pin_PB03
#define SPI_FLASH_MOSI_PIN &pin_PB22
#define SPI_FLASH_SCK_PIN &pin_PB23

// Clock rates are off: Salae reads 12MHz which is the limit even though we set it to the safer 8MHz.
#define SPI_FLASH_BAUDRATE (8000000)

#define BOARD_HAS_CRYSTAL 1

#define DEFAULT_UART_BUS_TX (&pin_PA10)
#define DEFAULT_UART_BUS_RX (&pin_PA11)
#define DEFAULT_SPI_BUS_MISO (&pin_PA12)
#define DEFAULT_I2C_BUS_SDA (&pin_PA22)
#define DEFAULT_I2C_BUS_SCL (&pin_PA23)
#define MICROPY_HW_LED_TX (&pin_PA27)
#define MICROPY_HW_LED_STATUS (&pin_PA28)
#define MICROPY_HW_LED_RX (&pin_PA31)
#define DEFAULT_SPI_BUS_MOSI (&pin_PB10)
#define DEFAULT_SPI_BUS_SCK (&pin_PB11)

// USB is always used internally so skip the pin objects for it.
#define IGNORE_PIN_PA24 1
#define IGNORE_PIN_PA25 1